Loose-leaf book.



J. G. DAWSON.

LOOSE LEAF BOOK.

APPLICATION IILED NOV. 15; 1906.

Patented Dec. 13, 1910.

irzdeizzaz" ii haiwew JAMES C. DAWSON, OF ST. LOUIS, MISSOURI,

ASSIGNOR T0 SIEBER & TRUSSELL MNFG.

00., A CORPORATION OF MISSOURI.

Specification of Letters Patent.

LOOSE-LEAF BOOK.

Patented Dec. 13, 1910.

Application filed November 15, 1906. Serial No. 343,608.

To all whom it may concern:

Be it known that I, JAMEs O. Dawson, a resident of the city of St. Louis, State of Missouri, and a citizen of the United States, have invented certain new and useful Improvements in Loose-Leaf Books, of which the following is a specification, and which are illustrated in the accompanying draw ings, forming a part thereof.

The invention relates to loose leaf books, and particularly to means for uniting the sheet-holding mechanism and the covers of such a book.

The object of the invention is to provide a loose leaf book of simple and durable construction, and so formed that the binding mechanism of the book cannot be stripped from the covers, in use.

The invention contemplates sheet-holding mechanism having a base adapted to be applied to the inner face of a book cover, and means formed on the cover for gripping the edges of the base of the sheetholding mechanism.

In the accompanying drawings Figure 1 is a plan view of the inner face of a book constructed according to the invention; Fig. 2 is a longitudinal section on the line 22 of Fig. 1, and drawn to a larger scale; Fig. 3 is a detail transverse section on the line 33 of Fig. 2; and Fig. 4 is a detail perspective view illustratingthe method of assembling the parts of the book, some parts being omitted.

The cover of a book is shown in the drawings at 10, each of its two sides or wings 11, 12, being preferably composed of three-ply material comprising, as shown, an inner and outer facing of leather 13, 14, and a layer of filling material 15. The outer leather facing or covering 14 is continued over the back 16 of the book, that for the two sides of the cover being preferably formed integral, while the inner facing 13 is supplanted at the back of the book, as shown, by a section of fabric 17 preferably having its side edges covered by the facing material 13. The filling material 15 is discontinued adjacent the two side edges of the back of the book to permit the flexing of the cover at those points.

Sheet-holding mechanism is applied to the cover 10, preferably at the inner face of its back. As shown this mechanism comprises a supporting member or frame generally designated by the numeral 18. This supporting frame includes a base plate 19, substantially the size of the back of the book and bowed to conform to the rounded shape of the back, and a second plate 20 secured thereto preferably by means of ears or lugs 21, 22, turned up from the base plate 19. Openable filling rings or arches 23 are provided for receiving the leaves of the book (not shown) and each comprises a pair of mating binding post members pivotally mounted on the supporting member 18 and engaged, by a cam-piece 24 slidingly mounted on the supporting member to close the arches, and by a spring 25 to open the arches.

For uniting the sheet-holding mechanism and the cover 10 of the book, portions of the cover material, as the edges of the outer facing let of the cover, are overturned to form pockets, as indicated at 26, 27, for receiving the ends of the supporting frame 18 of the sheet-holding mechanism. As shown, the base plate 19 is applied to the back of the book beneath the fabric 17, the lugs 21 and 22 projecting through openings 28, 29, in the fabric and the overturned edges 26, 27, of the covering leather are clamped between the base plate 19 and the plate 20.

By means of this construction the sheet holding mechanism is firmly secured in position at the back of the book and cannot be dislodged without destroying the material of the cover.

I claim as my invention 1. In a loose leaf book, in combination, sheet holding mechanism comprising a base plate and a plate superimposed on the base plate and secured thereto, and a cover having its upper and lower edges overturned to form pockets, each end of the base plate fitting into one of the pockets and the overturned edges of the cover being clamped between the base plate and the superimposed plate. 1

2. In. a loose leaf book, in combination, sheet holding mechanism having a base plate, a cover secured to the base plate and having one of its edges overturned to form a pocket, the end of the base plate of the sheet holding mechanism fitting into the pocket, and a clamping member superimposed on the overturned edge of the cover and secured to the base plate.

3. In a loose leaf binder, in combination,

sheet-holding mechanism comprising a base plate and a plate superimposed on the baseplate, clamping lugs connecting the plates and a cover having its upper and lower 5 edges overturned to form pockets, each end of the base-plate fitting into one of the pockets and the overturned edges of the I' i i 1 I cover being clamped between the base-plate and the superimposed plate and being apertured to receive the clamping lugs.

JAMES U. DIUVSON. \Vitnesses Roe'r. H.CON1s, JR, P. LATCIIINGS. 

